EP 2546422 A4 20140122 - CONTROL SYSTEM FOR A HYBRID EXCAVATOR
Title (en)
CONTROL SYSTEM FOR A HYBRID EXCAVATOR
Title (de)
STEUERSYSTEM FÜR EINEN HYBRIDBAGGER
Title (fr)
SYSTÈME DE COMMANDE POUR EXCAVATRICE HYBRIDE
Publication
Application
Priority
KR 2010004175 W 20100628
Abstract (en)
[origin: EP2546422A1] The present invention relates to a control system for a hybrid excavator including an engine, a hydraulic pump driven by the engine to drive a hydraulic actuator by hydraulic fluid, a generator driven by the engine to generate electric energy, and an energy storage device charging the electric energy generated by the generator and supplying the electric energy to an electric actuator, the control system comprising: a required torque detection means for detecting a torque that is required to drive the hydraulic pump; a charge amount detection means for detecting a charge rate (or charge amount) of the electric energy storage device; a memory storing a generation degree (or generation amount) in accordance with the torque and the charge rate (or charge amount); and a hybrid control means for controlling the generator in accordance with the torque value detected by the required torque detection means and the generation amount in a memory means that corresponds to the charge rate value (or charge amount) detected by the charge amount detection means. According to the control system, the fuel efficiency is optimized by driving the electric generator attached to the engine based on the required torque of the hydraulic pump and the preset generation amount value corresponding to the SOC (State Of Charge).
IPC 8 full level
E02F 9/22 (2006.01); B60L 50/16 (2019.01); F02D 29/04 (2006.01); B62D 123/00 (2006.01)
CPC (source: EP US)
E02F 9/2025 (2013.01 - US); E02F 9/2075 (2013.01 - EP US); E02F 9/2091 (2013.01 - EP US); E02F 9/2246 (2013.01 - EP US); F16H 61/468 (2013.01 - EP US); G01M 1/22 (2013.01 - EP US); B60W 2510/244 (2013.01 - EP US)
Citation (search report)
- [I] JP 2005083242 A 20050331 - KOMATSU MFG CO LTD
- [A] JP 2003009308 A 20030110 - KOBELCO CONSTR MACHINERY LTD
- [I] US 7669413 B2 20100302 - KOMIYAMA MASAYUKI [JP], et al
- [E] US 2010332088 A1 20101230 - OKANO YASUO [JP], et al & JP 2009013632 A 20090122 - HITACHI CONSTRUCTION MACHINERY
- [A] JP 2008255699 A 20081023 - CATERPILLAR JAPAN LTD
- See references of WO 2012002585A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
EP 2546422 A1 20130116; EP 2546422 A4 20140122; EP 2546422 B1 20161019; CN 102869838 A 20130109; CN 102869838 B 20150923; JP 2013536331 A 20130919; JP 5758994 B2 20150805; KR 20130103305 A 20130923; US 2013090771 A1 20130411; US 9182312 B2 20151110; WO 2012002585 A1 20120105
DOCDB simple family (application)
EP 10854131 A 20100628; CN 201080066568 A 20100628; JP 2013518200 A 20100628; KR 2010004175 W 20100628; KR 20127025428 A 20100628; US 201013639962 A 20100628